<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        *{
            color: white;margin: 0;padding: 0;
        }
        .header{width: 1000px;height: 64px;background: #2a4aa0;margin: 0 auto}
        .container{height: 400px;width: 1000px;margin: 0 auto}
        .container.main{float: left;width: 700px;height: 400px;background: blueviolet;}
        .container.side{float: right;width: 300px;height: 400px;background: coral;}
        .footer{width: 1000px;height: 80px;background: black;margin: 0 auto}
    </style>
</head>
<body>
<div class="header">

</div>
<div class="container">
    <div class="main">

    </div>
    <div class="side">

    </div>
</div>
<div class="footer">

</div>
</body>
</html